So my chicks are about 2 weeks old (4 of them) and have a mama heating pad in the brooder. My power is out at the moment and according to the power company will be out for 4 hours yet. should I rush home to put a heat lamp on them, or will they huddle up and be fine for a couple hours? they don't seem to spend much time during the day under the heating pad, so my gut feeling is that they will be fine. thoughts?